Melotte



(No Model.) 2 Sheets-Sheet I. G. W. MELOTTE.

BLOW PIPE BED.

No. 400,103. Patented Mar. 26, 1889.

lw'vlmaoo ao N. PETERS, Fhokrhlhugmphen Washinglnm D4 C.

2 Sheets-Sheet 2.

' (No Model.)

G. W. MELOTTE.

BLOW PIPE BED No. 400,103. Patented Mar. 26, 1889.

UNITED STAT S PATENT OFFICE.

GEORGE IVASIIINGTON MELOTTE, OF ITHACA, NEIV YORK.

BLOW-PIPE BED.

SPECIFICATION forming part of Letters Patent No. 400,103, dated March26, 1889.

Application filed July 30, 1888.

To all whom it may concern:

Be it known that I, GEORGE WASHINGTON MELOTTE, a citizen of the UnitedStates, residing at- Ithaca, in the county of Tompkins and State of NewYork, have invented a new and useful Soldering Pad and Stand with aMelting-Cavity, of which the following is a specification, referencebeing had to the accompanying drawings.

My invention relates to an improvement in soldering pads and stands; andit consists in the peculiar construction and combination of devices thatwill be more fully set forth hereinafter, and particularly pointed outin the claims.

In the accompanying drawings, Figure l is a top plan View of my improvedpad or cushion. Fig. 2 is a side elevation, partly in section, of thecushion and supporting-stand. Fig. 3 represents the bottom of themeltingcup. Fig. 4is a perspective View of the mold. Fig. 5 is avertical sectional view of the pad, taken on the line 00 a: of Fig. 1,and showing the melting-cup in the excavation. Fig. (i is a plan View ofthe reverse side of the .pad, showing a broken key and thimble clampedto the bed in position for repairing. Fig. 7 is a plan View of themodified form of bed, showing the meltingexcavation more centrallylocated and the mold clamped against the flat face of the band I). Fig.8 is a side elevation of the modified form shown in Fig. 7.

The pad or cushion is made of a continuous ribbon of asbestus cloth orpaper, a, wound upon itself, as indicated by the circular lines in Fig.1.

The preferred diameter of the pad for dentists and jewelers use is fromthree and onehalf to five inches, and the thickness of the pad ispreferablyfrom five-eighths to an inch.

Around the perimeter of the pad is a metallic band, 1), preferably ofbrass or iron, which prevents the ribbon of asbestus from uncoiling andrenders the pad compact. In the upper side of the pad, near one edgethereof, is made a concave recess, 0, substantially in the form of aclam-shell. This recess is formed by forcing the asbestus layersdownward by pressing on the same with the thumb and removing or cuttingaway the por- Serial No. 281.419. (No model.)

tions of the layers which are below the plane of the pad.

In one side of the recess 0 is a curved extension, 0 which serves thepurpose of holding the spout of the crucible or cup. In the bottom ofthe recess 0 are holes 0. When a blow-pipe is used as the source ofheat, these openings are plugged with asbestus; but when a Bunsen burneris used, as shown in Fig. 2, they are left open, and in this case aremovable-cup or crucible, c, is employed, which is so shaped that it isadapted to lie in the recess 0, with its spout in the extended recess 0This cup or crucible is made of fire-clay, sand, and borax, or otherrefractory substances, and is hardened in the recess 0 when dry. Thiscup or crucible has radial ribs 0 on its bottom, which bear against thebottom of the recess a, and thereby cause a space between said recessand the cup into which the flame from the burner enters, thus enablingthe cup to be heated to a very intense degree. The lower side of the padis perfectly flat and has no recess or indentation, and lies upon fearor more radial arms,

e, that extend to the edge of the pad, and are bent upward at theirouter ends, which bear on the edge of the pad, as shown in Fig. 2. Thepad may be removed from these arms and reversedthat is to say, eitherside of the pad may be turned up.

My construction of the pad, by forming the same of a coiled asbestusribbon, renders the pad sufficiently compact and dense, and yet allowspins and clamping devices to be inserted between its coils at anyportion of its surface without injury thereto. The pad acts as acushion, and the asbestus-coils make a durable level surface, and yet donot allow melted metal to sink into the pad. The pad is also peculiarlyadapted to retain the heat while in use.

The ingot-mold c is rectangular in form, has plane surfaces, and has twocavities on one side and one on the other, as shown, and is adapted tobe clamped on the upper side of the pad, with either side of the moldpresented to the same, and with the mouth of either of its cavitiespresented to the spout of the cup or to the recess extension 0 so thatwhen the pad is tilted the metal in the cup or recess will flow into themold.

Surrounding the metallic band I) is a V- shaped or dovetailed ring, f,on which are several movable pieces, f, which have dovetailed recessesengaging the ring, and are adapted to slide on the latter, so that theclamps may be grouped together or dispersed on all sides of the pad, asmay be desirable. Spring clamp-armsf are inserted in openings in theslide-pieces f, and are adapted to retain the ingot-mold or othernecessary articles on the pad. Pincla1nps f are stuck into the asbestuspad between the layers or coils thereof, and are also useful to retainthe mold and other articles on the pad.

The circular form of the pad may be changed by flattening the same onone side, thus making the shape of the pad as shown by Fig. 1. The moldmay be then secured in an upright position on the flattened side of theband I), which will in this instance be provided with a downturnedextension or arm, I), to bear against the inner side of the mold, asshown in Fig. 5. No means are herein shown to secure the mold in thisposition to the pad, as common SCIQW-(JlZUTIPS or other means, such aswill readily suggest themselves, may be employed for this purpose. \Vhenthus arranged, the mold is brought near the recess 0, when the latter ismade in the center of the pad, and the molten metal may be flowed fromthe recess to the mold by tipping the pad, as in the previous instance.A handle, 7r, is fast to one side of the padband l), by means of whichthe pad can be readilylifted and either side placed up. The centers ofthe arms 6 are fast to a cap, 9, which is flat on its lower side and hasa slot, g, in which the round-topped tenon of the rod h is inserted andheld by a pin, g", thus making a hinge-joint. The rod 72. is inserted inthe cavity or bore 2: of the stand 1', and, being round, the rod, itsarms 6, and the cushion or pad may be freely rotated. On the lowerportion of the rod 7:. is a spiral spring, j. The upper end of thespring bears against a shoulder, 17, of the bore of the stand, and toregulate the tension of the spring a nut, j, is screwed on the threadedlower end of the rod 71. By this means the spring exerts a constantdownward pressure 011 the rod, which serves to retain the pad normallyin a horizontal position, yet permits the pad to be tilted against thepressure of the spring, as will be readily umlerstoml.

The Bunsen burner (Z comprises a plain gas-faucet, (1, fast to the studd of the base of the stand, with a fish-tailed or other burn er, d, anda loose piece of pipe, (1, about the burner d', having an air-entrance,(1.

Having thus described my invention, I claim- I 1. The pad consisting ofan asbestus ribbon or strip coiled upon itself, whereby pins may beinserted between the layers or coils of the pad, for the purpose setforth, substantially as described.

2. The pad consisting of tightly-coiled asbestus ribbon, and having theinclosing-band Z) on its perimeter, substantially as described.

The combination of the stand, the rod therein, the spring bearingdownward on the rod and reacting at its upper end against the stand, theholding-arms 6, having the cap g, hinged to the upper end of the rod,and the pad supported on the arms, substantially as described.

4. The .revoluble asbestus block a, supported on the stand and providedwith the excavation e, and aperture 0' in the excavation, and theBunsen. burner (1, fast to the stand 1? and arranged to register withthe aperture 0 when the block a is rotated.

5. The stand 2', provided with the round rod h in its upright post, incombination with the arms 6, the pad (I, and the cap its joint made bythe tongue g of rod 71. in the slot of the cap and with the spring- 7,and the cap resting on the top of the post of the stand, whereby thearms 0 and. the cushion-block a may be tipped, as set forth.

(3. The movable cup 0', provided with the ribs 0 on its under side, incombination with a perforated excavated cup, 0, in the block a, and aBunsen burner, (I, the said parts being suitably supported by the stand'5, as set forth.

7. The combination of the ingot-mold c with the block (1, having theexcavation c and aperture 0, and the removable cup 0', as set forth.

8. The cushion a, flat on one side and provided with a band, Z), havinga portion, 1), at right angles to the plane of the cushion, the mold c,and means for securing the mold to portion 1), in combination with thecup 0", having spout c, as set forth.

GEORGE WASHINGTON lllEhOT'lE.

\Vitnesses:

SAMUEL J. PARKER, J. P. H. ARMs'rRoNe.

